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"ZNF198 protein, involved in rearrangement in myeloproliferative disease, forms complexes with the DNA repair-associated HHR6A/6B and RAD18 proteins." |
Kunapuli P, Somerville R, Still IH, Cowell JK |
Published May 1, 2003 in Oncogene volume 22 .
Pubmed ID: 12776193
Abstract:
| A highly specific t(8;13)(p11;q12) translocation has been consistently identified in bone marrow cells from patients with an atypical myeloproliferative disease that is associated with peripheral blood eosinophila and T- or B-cell leukemias. In all patients analysed to date, the translocation event results in a chimeric gene in which the atypical zinc-finger domain of ZNF198 is fused to the N-terminal end of the catalytic domain of the FGFR1 receptor tyrosine kinase. To understand more about the consequences of this rearrangement we have investigated the normal function of the ZNF198 gene. Using yeast two-hybrid analysis we identified HHR6 as a protein binding partner and confirmed this using immunoprecipitation studies. The ZNF198/FGFR1 fusion protein also binds to HHR6. We demonstrate here that the human RAD18 is also present in the ZNF198/HHR6 protein complex, although it does not coimmunoprecipitate with the fusion kinase. Cells expressing the fusion kinase gene show a marked increased sensitivity to UVB irradiation, suggesting that it acts in a dominant-negative way to affect DNA repair. These observations support the idea that ZNF198, through its interaction with HHR6 and RAD18, may be involved in the DNA repair process. |
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Last modification of this entry: Oct. 6, 2010
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